Dear Martin,

Concerning .... that number??

A comment to your question:

please read the text before you send the question.

You write : .... would like to know that number?? Do you mean the verb number? If yes, you must write ... that numbers! But I cannot understand the sense .

Concerning the molecular brightness ε

please read the following reference:

- Y. Chen et al. Biophys. J 1999, 77, 553-557

and the link.

http://www.stanford.edu/group/Zarelab/publinks/712.pdf

The following link is very useful too:

http://www.fluorophores.tugraz.at/substance/227

concerning your fluorochrome X-Rhod-1

Common name(s): X-rhod-1

IUPAC name:

CAS number:

Chemical Formula: C60H67BrN4O19

Molecular Weight: 1228.11g / Mol

Substance Class:

Description: structure of the cell permeant derivative of X-rhod-1

Good luck et bonne chance pour votre recherche.

JRG